Improved gar-wheel



-G. NATORP.

Car Wheel.

Patented Nov. 3, 1868.

GUSTAVUS NATORP,

OF NEW YORK, N. Y.

Letters Patent No; 83,7 22, datcd November 3, 1868.

m:eovnn GAR-WHEEL.

1'11. Schedule ufczred to in these Letters atent and making part o! the unn.

To all whom t may c mcem:

Be it known that I, Gusmvos NATORP, of New York city, of New York county, in the State of New York, have invented certain new and useful Improvements in Car-Wheels; and Ido hereby declare that the following is a full and exact description thereof, reference being had to the ac3ompanying drawings, making part of this application.

My invention relatos to certain new and useful improvements in that class of'car-wheels which are made of metal and wood combined.

Previous to my invention many methods of v construction in this kind of wheels have been suggested; some in which a metallic hub merely is employed in combination with a wooden body provided with a metallic tire;

'others, in which the hub and body are made of metal,

strengthening-devices,haveadded materially to the cost and complexity of the manufacture of this kind of wheels.

' My invention has for its objects to dispense with all retainingbands, rings, or other appliances, for the retention of the tire and looking together of the metallic and wooden portions, and at the same time to produce a wheel more simple and economic than, and eqnally as strong and desirable as, any other oompound wheel heretofore made; and to these ends my invention con sists in a wheel composed of a metallic body and metallic tire, with an interposed wooden portion, and the metallic and wooden pbrtions so constructed and put together as to securely interlock with each other, thus rendering unnecessary any retaining-rings, as will be presently more fully explained.'

To enable those skilled in the art to make and use my inventon,'l will prooecd to more fully describe it, referring, by 'letters, to the accompanying drawings, in which Figure 1 is an elevation of one of iny improved compoundwheel Figure 2 is a section at x av of fig. l;

Figure 3 is a section at y y, fig. 2;.

Figure 4 is a section of the body alone; and

Figure 5, detail section, showing a modification.

In the several figures, A represents the metallic body of the wheel, which may be made of the desired size and design, and B, a metallic tire. A

The periphery of the body A is cast, (or otherwise formed,) with annularlips, d e, in such manner as to form dovetailed recesses at f g, (see fig. 4,) into which fit the dovetails of the two sets of blocks, h h, &c., and 02 i, &c.

m en, &c., are centre-wedges or keying-blocks, which are forced in between the two sets h h and 13 i, (as i1lus trated,) after the said sets are placed in position.

The wedgc-blocks m are so shaped as to protrude or project slightly beyond the faces of the other blocks, h and i, as shown at o, and the internal face or periphery of the tire B is formed with a groove or slight annular depression at p to accommodate the said protrudirig wedge-ends.

The object of this peculiarity of construction is to permit the frcing or shrinking on of the tire over the projections m, so that, by the introduction of said projections within the annular depresson p, the retention of the tire may be insuzzed.

The blocks i are made a little longer than those marked h, and the two Sets are made tapering, so that the periphery of the structure, (before the tire is put on,) with theexception of the proj ections m, presents a bevelled sun"ace to match with the internal bevelled surface of the tire B, as shown.

To put the parts together, after they have been made of the shapes shown, I take either set of blocks, h or i, and place them in position. I then put in the other set, putting the blocks of the two sets about opposite to each other. I then insert the wedge-shaped blocks, h, radially, arranging them so as to break joints with the blocks h and i, and force them home,causing the blocks h and 72 to be each and all securely held in their seats. I then force or Shrink (or both) on the tire B, so that the projection m (when the whole is finished) will be expanded and seated in the annular depression or groove at p.

It will be seen that when thus completed and put together, the several parts will be securely locked together, and that, as an entirety, the wheel will be per: fectly strong and reliable.

By this method of construction, I am enabled. to produce a strong, economic, and cheap compound wheel, without the use, cxpense, and encumbrance of any auxiliary retainingring or rings, or other looking or strengthening-devces.

Of course the design, proportions, and comparative strength of the several parts may be varied from what I have shown, and will be regulated at the discretion of the manufacturer or engineer, and as practice or experience may dictate; and the shape of the parts also may be changed, without departing from the spirit of my invention, so long as they are so formed as to interlock, substantially as explained, that characteristic feature being the gist of my invention. The wedges m, for instance, may be made as illnstrated at s,'fig. 5, in lieu of having their tops rounded.

Having fully explained my invention, so that those skilled in the art can practise it,

What I claim as new, and desire to secure by Letters Patent, is-

A compound wheel, in which the,wooden and metallic portions are interlocked and bound together, substantially as described.

In testimony whereof, I have hereunto set my hand and seal, this 14th day of August, 1868.

G. NATORP. [L. s.] Witncsses:

WM. H. BISHOP,

ANDREW DE LAOY. 

